The 5,000-year struggle to align the heavens with the clock and what happened to the missing ten days. Measuring the daily and yearly cycle of the cosmos has never been entirely straightforward.The year 2000 is alternatively the year 2544 (Buddhist), 6236 (Ancient Egyptian), 5761 (Jewish) or simply the year of the Dragon (Chinese). The story of the creation of the Western calendar is a story of emperors and popes, mathematicians and monks, and the growth of scientific calculation to the point where, bizarrely, our measurement of time by atomic pulses is now more acurate than Time itself: the Earth is an elderly lady and slightly eccentric -- she loses half a second a century. Days have been invented (Julius Caesar needed an extra 80 days in 46BC), lost (Pope Gregory XIII ditched ten days in 1582) and moved (because Julius Caesar had thirty-one in his month, Augustus determined that he should have the same, so he pinched one from February). The Calendar links politics and religion, astronomy and mathematics, Cleopatra and Stephen Hawking. And it is published as millions of computer users wonder what will happen when, after 31 December 1999, their dates run out!
Categories:
- Science & Math
- Astronomy & Space Science
- Astronomy
- Astronomy & Space Science
Publisher : Harpercollins Pub Ltd
Author : Duncan, David Ewing
Language : English
Edition : First Printing - First Thus
Published :1999-10-27
Number Of Pages : 384
Binding : paperback
ISBN-10 : 1857029798
ISBN-13 : 9781857029796
Item weight : 0.79 lb
Dimensions : 1.26 in x 4.96 in x 6.93 in
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.